mcdonnell



UNITED STATES PATENT OFFICE.

VIRGIL ll. MCOONNELL, OF BUFFALO, NE? YORK, ASSIGNOR OF ONE-THIRD TO BURRITT E. MCGONNELL, OF SAME PLACE.

FEED-WATER PURIFIER.

@IPECIFICATION forming part of Letters Patent No. 360,455, dated April 5, 1887.

Serial X0. 207,294. (No model.)

To aZZ whom it may concern:

Be it known that LVIRGIL H. MoCoNNELL, of the city of Buffalo, in the county of Erie and State of New York, have invented new and useful Improvements in Feedater Purifiers, of which the following is a specification.

This invention relates to that class of filters which are employed for removing impurities from water, and is especially designed for use in purifying the feed-water of steam-boilers in order toprevent incrustations in the same.

My invention has for its object to purify the water thoroughly and to provide means for removing the separated impurities quickly from the filter.

My invention consists to these ends of the improvements which will be hereinafter fully set forth, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a longitudinal sectional elevation of my improved filter. Fig. 2 is avhorizontal section of the same. Fig. Sis an elevation of the front end of the filter. Figs. 4 and 5 are vertical crossseetions in lines 00 x and y y, Fig. 1, re-

spect-ively.

Like letters of reference refer to like parts in the several figures.

A represents the feed-water pipe, which connects with the bottom of the shellB of a 0 feed-water heater. The latter is provided with an internal steam-coil, b, which may be supplied with exhaust-steam, and which serves to heat the feed-water as it passes upwardly through the shell B. I

0 represents the feedwater pipe, which connects the upper end of the shell B with the preliminary settling-compartment D of the filter, and which is provided with a stopcock,

' O. The pipe 0 enters the front side of the 4.0 compartment D near its middle.

d represents a deflecting plate arranged transversely in the compartment D opposite the pipe 0. The compartment D is provided with water-passages d d above and below the deflecting-plate d.

6 represents a transverse partltlon arranged in the compartment D and extending to the bottom thereof, while its upper edge is separated-from the top of the compartment by a water-passage, e. I

f represents an outletopenmg formed in the rear wall, f, of the compartment D, and provided, preferably, with a wire-cloth scrcen,f'-'. The feed-water becomes gradually heated as it passes from the bottom to the top of the heater B, and a large portion of the impurities contained in the water assume a granular form by reason of the heat imparted to the water. The hot feed-water entering the preliminary separating'eompartment D encounters, first, the deflectingplate d, and then the partition 0, whereby a large portion of the'granular impurities are deflected toward the bottom of the compartment. The spacey in the compart ment between the partition 6 and the rear wall, f, forms a settling-chamber, in which the water comes to a state of comparative rest and deposits the heavy impurities held in sus pension.

H represents a chamber arranged in rear of the preliminary separating chamber D, and provided with a bag or porous receptacle, h, which is filled with a suitable substance whereby impurities which are dissolved in the water are prepared for precipitation. 7

\Vhen the water contains bicarbonate of lime in solution, the chamber H is supplied with caustic lime, whereby the soluble bicarbonate of lime is reduced to carbonate and precipitated in the chamber J. Vhen the water contains earthy salts, the chamber H is supplied with carbonate of soda, whereby these salts are broken up and converted into insoluble compounds, which are precipitated, and soluble compounds which do not injurionsly affect the boilers. The rear wall,f, of the compartment D forms the front wall of the chamber H, and the waterenters the upper portion ofthe chamber H through the opening f. The bag h is preferably attached to the cover 71 of the chamber H.

t represents the rear wall of the chamber H, which is provided near its bottom with an outlet-opening, i, provided, preferably, with a wire screen, '6", through which the water passes from the chamber H into a settling-chamber, J, arranged in rear'of the chamber H. The settling-chamber J is provided adjacent to the chamber H with a depending pocket, j, which receives the heaviestimpurities, and in rear of we the pocket j with transverse partitions k 71; k"

k, of gradually-increasing height, forming a succession of settling-compartments, K K K K in which the remaining heavy impurities are deposited. The rear wall, Z, of the chamber J is provided near its top with an outletopening, at, which is preferably covered with a wire screen, at.

N represents a descending passage or conduit leading from the opening in tothe bottom of the filter-chamber O, which is arranged in rear of the upper portion of the passage N. The bottom of the filter-chamber O is provided with an inlet-opening, 1), covered with a diaphragm, p, of wire-gauze or perforated metal. The chamber 0 is filled with gravel, charcoal, or other suitable filtering material, through which the water percolates, and by which it is freed from the rem ainingimpu rities. The purified water escapes from the filter-chamber 0 through a pipe, q, which is connected with the upper portion of the chamber 0, and provided with a suitable stopcock, q.

r is a pipe which is connected with the water-supply, and which communicates with the outlet-pipe q between the stop-cock q and the filter-chamber O.

s s s s 8* 8 8 8 represent outlet-pipes communicating with the several sediment-00hr partments of the apparatus and connected with a common dischargepipe, S, which is provided with a suitable stopcock, S.

The chambers D J O and the passage N are closed by a single cover, T, which is provided above the chamber H with a raised portion, t, to which the cover h is secured, as represented in Fig. 1.

The feed-water becomes heated in passing through the heater B, and deposits in the preliminary settlingcompartment D such impurities as have been prepared forprecipitation by the influence of the heat. The feed-water next percolates through the substance in the chamber H, whereby the dissolved impurities are prepared for precipitation, and these impurities are deposited in the chamber J. The water passes finally through the filtering material. in the chamber 0, whereby the remaining impurities are intercepted, and the water escapes finally through the dischargepipe q in a purified condition. The deposited impurities are removed from the apparatus, from time to time, by opening the cock S of the dischargepipe S. When it is desired to cleanse the'ap para'tus, the current of water through the same is reversed by closing the cock 0 of the feedpipe 0 and the cocklq of the discharge-pipe q, and opening the cock 1" of the supply-pipe r and the cock S of the discharge-pipe S.

My improved apparatus is especially desirable for purifying the feed-water of steamboilers, locomotives, &c., in localities in which the water carries a large amount of impurities, whereby the danger of incrustation is greatly reduced and the boilers are maintained in good working condition at comparatively small cost.

I claim as my inventio'n 1. The combination, with the preliminary settling-chamber D,provided with a water-jnlet pipe, 0, of the deflecting-plate d, provided with water-passages at its top and bottom, and a transverse partition, e, resting on the bottom of the settling-chamber and provided with a water-passage at the top, substantially as set forth.

2. The combination, with a filter, of a per colatingchamber, H, containing a precipitating ingredient, and a settling-chamber, J, arranged between the percolating-chamber and the filter, in which chamber the impurities are deposited before the water reaches the filter, substantially as set forth.

3. The combination, with the filter-chamber O, of the percolating-chamber H and the precipitating-chamber J, provided with a depending pocket, j, substantially as set forth.

4'. The combination, with the filter-chamber O, of the percolating-chamber H and the precipitating-chamber J, provided with transverse partitions of gradually-increasingheight, substantially as set forth.

5. The combination, with the filter-chamber O, of the preliminary settling-chamber D, the percolati11g-chamberH, the settlingchamber J, and the passage N, connecting the chamber J with the filter-chamber O, substantially as set forth.

6. The combination, with the filter'chamber 0, provided with an inlet in its bottom and an outlet at its top, of the percolating-chamber H, the settling-chamber J, and the descending passage N, connecting the upper end of the chamber J with the bottom of the filterchamber, substantially as set forth.

7. The combination, with the preliminary settling-chamber D, provided with an inletpipe, 0, the settling-chamber J, the passage N, and the filter-chamber 0, provided with an outlet-pipe, q, of a supply-pipe, 1', connected with the outlet-pipe q, a sediment-diseharge pipe, S, and branches connecting the pipe S with the several settling-chambers, substantially as set forth.

\Vitness my hand this 26th day of June, 1886.

V. H. MoOONN ELL.

itnesses:

JNo. J. BONNER, CARL F. GEYER. 

